/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Gets the graphs currently in the blueprint associated with the specified interface
static void GetInterfaceGraphs ( [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * Blueprint, const [FName](API\Runtime\Core\UObject\FName) & InterfaceClassName, [TArray](API\Runtime\Core\Containers\TArray)< [UEdGraph](API\Runtime\Engine\EdGraph\UEdGraph) * > & ChildGraphs )